CA2622077A1 - A tracked vehicle, especially a snow scooter - Google Patents
A tracked vehicle, especially a snow scooter Download PDFInfo
- Publication number
- CA2622077A1 CA2622077A1 CA002622077A CA2622077A CA2622077A1 CA 2622077 A1 CA2622077 A1 CA 2622077A1 CA 002622077 A CA002622077 A CA 002622077A CA 2622077 A CA2622077 A CA 2622077A CA 2622077 A1 CA2622077 A1 CA 2622077A1
- Authority
- CA
- Canada
- Prior art keywords
- track
- drive
- vehicle
- coupled
- turning
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 230000000712 assembly Effects 0.000 claims abstract description 9
- 238000000429 assembly Methods 0.000 claims abstract description 9
- 230000007246 mechanism Effects 0.000 claims abstract description 7
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000013016 damping Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 239000000725 suspension Substances 0.000 description 3
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D55/00—Endless track vehicles
- B62D55/08—Endless track units; Parts thereof
- B62D55/084—Endless-track units or carriages mounted separably, adjustably or extensibly on vehicles, e.g. portable track units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B17/00—Accessories or details of sledges
- B62B17/02—Runners
- B62B17/04—Runners resiliently suspended
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D11/00—Steering non-deflectable wheels; Steering endless tracks or the like
- B62D11/20—Endless-track steering having pivoted bogie carrying track
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D55/00—Endless track vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D55/00—Endless track vehicles
- B62D55/02—Endless track vehicles with tracks and additional ground wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D55/00—Endless track vehicles
- B62D55/06—Endless track vehicles with tracks without ground wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D55/00—Endless track vehicles
- B62D55/06—Endless track vehicles with tracks without ground wheels
- B62D55/065—Multi-track vehicles, i.e. more than two tracks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M27/00—Propulsion devices for sledges or the like
- B62M27/02—Propulsion devices for sledges or the like power driven
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2300/00—Indexing codes relating to the type of vehicle
- B60G2300/32—Track vehicles
- B60G2300/322—Snowmobiles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M27/00—Propulsion devices for sledges or the like
- B62M27/02—Propulsion devices for sledges or the like power driven
- B62M2027/026—Snow mobiles characterised by the suspension means
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Automatic Cycles, And Cycles In General (AREA)
- Motorcycle And Bicycle Frame (AREA)
- Transmission Devices (AREA)
- Axle Suspensions And Sidecars For Cycles (AREA)
- Non-Deflectable Wheels, Steering Of Trailers, Or Other Steering (AREA)
- Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
Abstract
A tracked vehicle, especially a snow scooter, that has two laterally spaced-apart front drive-track assemblies (10), each of which is turnable around a substantially vertical axis and which are coupled for common turning. Each drive-track assembly is carried by a vehicle chassis (11) via a vertically movable link device, which in respect of vertical turning rests against the chassis via a spring-damper assembly (7), and the drive-track assemblies are mechanically coupled by a parallel steering mechanism (23-26), which is manoeuvrable by a driver of the vehicle.
Description
A tracked vehicle, especially a snow scooter The invention relates to a vehicle, especially a snow scooter, of the kind that is seen in the preamble of the appended claim 1.
A tracked vehicle of snow scooter type usually has two front laterally spaced-apart skid rails/skis, which are parallel and jointly turnable around a respective substantially vertical axis. Furthermore, the skis are coupled to a steering device to allow a driver of the vehicle to steer the vehicle. The skis support the vehicle from the ground, which usually is snow. Then, the driving of the vehicle is usually composed of a rear cen-trally positioned track unit having a track that runs all around in the longitudinal direc-tion of the vehicle and is drivingly connected to the engine of the vehicle.
The track unit supports the rear part of the vehicle from the ground and offers a driving of the vehicle.
This conventional vehicle structure, having rear track driving and front non-driven steerable skis/runners, has the advantage of offering a simple damping suspension between the chassis and the skis, but the front steerable skis is an acceptable compro-mise between bearing capacity and steering capacity only at a chosen speed.
GB925032A discloses a tracked vehicle of the kind that is seen in the preamble of claim 1.
W09318956A1 discloses a snow scooter having two drive-track assemblies in front instead of skis. The object is to improve the steerability as well as to obtain a more efficient suspension of the front part.
Therefore, an object of the invention is to provide a design of a vehicle of the kind in question in order to produce an efficient steering and driving of the vehicle, also at high speeds, while retaining a chosen bearing capacity of the front steerable support members of the vehicle.
A tracked vehicle of snow scooter type usually has two front laterally spaced-apart skid rails/skis, which are parallel and jointly turnable around a respective substantially vertical axis. Furthermore, the skis are coupled to a steering device to allow a driver of the vehicle to steer the vehicle. The skis support the vehicle from the ground, which usually is snow. Then, the driving of the vehicle is usually composed of a rear cen-trally positioned track unit having a track that runs all around in the longitudinal direc-tion of the vehicle and is drivingly connected to the engine of the vehicle.
The track unit supports the rear part of the vehicle from the ground and offers a driving of the vehicle.
This conventional vehicle structure, having rear track driving and front non-driven steerable skis/runners, has the advantage of offering a simple damping suspension between the chassis and the skis, but the front steerable skis is an acceptable compro-mise between bearing capacity and steering capacity only at a chosen speed.
GB925032A discloses a tracked vehicle of the kind that is seen in the preamble of claim 1.
W09318956A1 discloses a snow scooter having two drive-track assemblies in front instead of skis. The object is to improve the steerability as well as to obtain a more efficient suspension of the front part.
Therefore, an object of the invention is to provide a design of a vehicle of the kind in question in order to produce an efficient steering and driving of the vehicle, also at high speeds, while retaining a chosen bearing capacity of the front steerable support members of the vehicle.
The object is attained by the invention.
The invention is defined in the appended independent claim.
Embodiments of the invention are defined in the appended dependent claims.
The spring-damper assembly that supports the drive-track device of the chassis may comprise a four-link mechanism, which carries the body via a joint that offers the sup-port body a turning around a substantially vertical axis, the drive line to the drive-track device suitably having a universal joint or the like at this turning axis. The drive line has naturally also a universal-joint coupling at the transition between the turnable parts of the link mechanism and the chassis, in a manner conventional per se.
In the following, the invention will be described by way of examples, reference being made to the appended drawing, which schematically and untrue to scale depicts parts essential to the invention.
Fig. 1 shows a plan view of a snow scooter according to the invention.
Fig. 2 schematically shows a sectioned view, taken along line 11-11 in Fig. 1.
Fig. 3 shows a schematic view taken along line III-III in Fig. 1.
The scooter has a chassis 1, which at the front end thereof in the direction of travel carries two laterally spaced-apart drive-track assemblies 10, and which at the rear end 2 thereof can be carried from the ground in an arbitrary way, for instance by a ski, a wheel, a central drive-track assembly or the like.
From Fig. 2, it can be seen that each track assembly 10 is carried from the chassis 11 via a suspension mechanism of four-link type, comprising two vertically spaced-apart generally horizontally extending arms 14, 15, which are turningly mounted 12, 13 at the chassis 11 and connect to two vertically spaced-apart fulcrums of a carrying body 16. The track assembly 10 has an upper attachment 92 for a (not shown) shock absorber carried by the chassis 11. A spring-damper leg 7 is shown supporting the link arm 15 in the vertical direction from the chassis 11. Via a generally vertically oriented rotary mounting, the body 16 is linked to a carrying element 19. The carrying element 19 carries a frame 39, which is turnably mounted on the element 19 around a substan-tially horizontal axis. The frame 39 extends in the direction of travel and the turning axis thereof extends transverse to the direction of travel.
It can be seen that a drive shaft extends through a central mounting in the element 19 and carries a chain sprocket 27. The drive shaft has couplings 32, 29 positioned to allow the drive shaft to follow the link mechanism, which turnably couples the assem-bly 10 to the chassis 11, in a manner conventional per se.
The frame 39 carries support rollers 42, return rollers 40 and drive rollers 44 for the endless track 50. At the front end of the frame, there is a cogwheel, which is driven from the chain sprocket 27 via a chain and which is coaxially drive-coupled to the drive roller 44 at the foremost upper turning point of the track 50. The drive roller is suitably toothed for the engagement with the corresponding recesses on the inside of the track 50. The chain transmission may naturally be replaced by some other known type of transmission, for instance a series of universal couplings interconnected via intermediate bar sections.
The frame 39 comprises struts 60, 64, which are length adjustable to allow alteration of the tension of the driving chain and the tension of the track 50, respectively. Par-ticularly in Fig. 3, it can be seen that the element 18 carries a radially projecting arm 17, which via a springing and damped cylinder 70 rests against a support roller 42 of the track 50 at a radial distance from the pivot-mounting centre of the frame of the element 18. Possibly, the spring-damper leg 70 may be adjustable in respect of the neutral-position length.
Finally, it can be seen that the carrying bodies 16, via pivot joints 23, are connected in parallel with a steering link 24, so that the track assemblies 10 are coupled for parallel motion upon deflection from the longitudinal direction of the vehicle, by the fact that the linking points 23 of the link 24 are situated uniformly spaced-apart from the pivot mountings 21 in the longitudinal direction of the vehicle. Via a conventional steering gear 25, the link 24 is coupled to a steering rod 26, which can be rotated by means of a conventional handlebar 27.
By the construction according to the invention, the scooter will be pulled by the track assemblies situated afore, which are resiliently suspended from the chassis of the scooter and are steerable by a steering device that is conventional per se. In a manner conventional per se, the drive shaft is coupled to a gear carried by the carrying body 16 of the drive unit via drive-shaft couplings.
By the fact that the frame 39 of the track assembly is turnable around an axis coincid-ing with the axis of the chain sprocket 27, favourable structural conditions are attained, and furthermore a relatively simple, damped and possibly drive-adjustable vibration damping of the track-carrying frame 39 of the track assembly 10 is attained.
The invention is defined in the appended independent claim.
Embodiments of the invention are defined in the appended dependent claims.
The spring-damper assembly that supports the drive-track device of the chassis may comprise a four-link mechanism, which carries the body via a joint that offers the sup-port body a turning around a substantially vertical axis, the drive line to the drive-track device suitably having a universal joint or the like at this turning axis. The drive line has naturally also a universal-joint coupling at the transition between the turnable parts of the link mechanism and the chassis, in a manner conventional per se.
In the following, the invention will be described by way of examples, reference being made to the appended drawing, which schematically and untrue to scale depicts parts essential to the invention.
Fig. 1 shows a plan view of a snow scooter according to the invention.
Fig. 2 schematically shows a sectioned view, taken along line 11-11 in Fig. 1.
Fig. 3 shows a schematic view taken along line III-III in Fig. 1.
The scooter has a chassis 1, which at the front end thereof in the direction of travel carries two laterally spaced-apart drive-track assemblies 10, and which at the rear end 2 thereof can be carried from the ground in an arbitrary way, for instance by a ski, a wheel, a central drive-track assembly or the like.
From Fig. 2, it can be seen that each track assembly 10 is carried from the chassis 11 via a suspension mechanism of four-link type, comprising two vertically spaced-apart generally horizontally extending arms 14, 15, which are turningly mounted 12, 13 at the chassis 11 and connect to two vertically spaced-apart fulcrums of a carrying body 16. The track assembly 10 has an upper attachment 92 for a (not shown) shock absorber carried by the chassis 11. A spring-damper leg 7 is shown supporting the link arm 15 in the vertical direction from the chassis 11. Via a generally vertically oriented rotary mounting, the body 16 is linked to a carrying element 19. The carrying element 19 carries a frame 39, which is turnably mounted on the element 19 around a substan-tially horizontal axis. The frame 39 extends in the direction of travel and the turning axis thereof extends transverse to the direction of travel.
It can be seen that a drive shaft extends through a central mounting in the element 19 and carries a chain sprocket 27. The drive shaft has couplings 32, 29 positioned to allow the drive shaft to follow the link mechanism, which turnably couples the assem-bly 10 to the chassis 11, in a manner conventional per se.
The frame 39 carries support rollers 42, return rollers 40 and drive rollers 44 for the endless track 50. At the front end of the frame, there is a cogwheel, which is driven from the chain sprocket 27 via a chain and which is coaxially drive-coupled to the drive roller 44 at the foremost upper turning point of the track 50. The drive roller is suitably toothed for the engagement with the corresponding recesses on the inside of the track 50. The chain transmission may naturally be replaced by some other known type of transmission, for instance a series of universal couplings interconnected via intermediate bar sections.
The frame 39 comprises struts 60, 64, which are length adjustable to allow alteration of the tension of the driving chain and the tension of the track 50, respectively. Par-ticularly in Fig. 3, it can be seen that the element 18 carries a radially projecting arm 17, which via a springing and damped cylinder 70 rests against a support roller 42 of the track 50 at a radial distance from the pivot-mounting centre of the frame of the element 18. Possibly, the spring-damper leg 70 may be adjustable in respect of the neutral-position length.
Finally, it can be seen that the carrying bodies 16, via pivot joints 23, are connected in parallel with a steering link 24, so that the track assemblies 10 are coupled for parallel motion upon deflection from the longitudinal direction of the vehicle, by the fact that the linking points 23 of the link 24 are situated uniformly spaced-apart from the pivot mountings 21 in the longitudinal direction of the vehicle. Via a conventional steering gear 25, the link 24 is coupled to a steering rod 26, which can be rotated by means of a conventional handlebar 27.
By the construction according to the invention, the scooter will be pulled by the track assemblies situated afore, which are resiliently suspended from the chassis of the scooter and are steerable by a steering device that is conventional per se. In a manner conventional per se, the drive shaft is coupled to a gear carried by the carrying body 16 of the drive unit via drive-shaft couplings.
By the fact that the frame 39 of the track assembly is turnable around an axis coincid-ing with the axis of the chain sprocket 27, favourable structural conditions are attained, and furthermore a relatively simple, damped and possibly drive-adjustable vibration damping of the track-carrying frame 39 of the track assembly 10 is attained.
Claims (4)
1. A tracked vehicle, especially a snow scooter, comprising two laterally spaced-apart front drive-track assemblies (10), each of which is turnable around a sub-stantially vertical axis and which are coupled for common turning, each drive-track assembly being carried by a vehicle chassis (11) via a vertically movable link device, which in respect of vertical turning rests against the chassis via a spring-damper assembly (7), and the drive-track assemblies being mechanically coupled by a parallel steering mechanism (23-26), which is manoeuvrable by a driver of the vehicle, char-acterized in that each drive-track assembly comprises a frame (39), which is turnably mounted on a carrying element (19) carried by the link mechanism for turning around a horizontal axis directed transverse to the direction of travel of the vehicle, and that a spring-damping leg (70) couples the track-assembly frame (39) to the carrying element (19) at a distance from the turning axis of the frame (39).
2. Tracked vehicle according to claim 1, characterized in that a drive shaft of the vehicle extends through a central opening through the carrying element (19), that the drive-track assembly comprises an endless circumferential running track, and that a transmission (27) is coupled between the drive shaft and a driving wheel, which engages with the inside of the running track and which is carried by the track-assembly frame (39).
3. Tracked vehicle according to claim 2, characterized in that the driving wheel (44) forms an upper front return point of the running track.
4. Tracked vehicle according to claim 2 or 3, characterized in that the transmission comprises a chain wheel coaxially coupled to the drive shaft, a cogwheel coaxially connected to the driving wheel (44), and an endless chain that transmits driving between the same.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE0501987A SE0501987L (en) | 2005-09-08 | 2005-09-08 | Band-driven vehicle, especially a snowmobile, comprising two front drive belt assemblies |
| SE0501987-2 | 2005-09-08 | ||
| PCT/SE2006/000998 WO2007030055A1 (en) | 2005-09-08 | 2006-08-31 | A tracked vehicle, especially a snow scooter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2622077A1 true CA2622077A1 (en) | 2007-03-15 |
Family
ID=37101549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002622077A Abandoned CA2622077A1 (en) | 2005-09-08 | 2006-08-31 | A tracked vehicle, especially a snow scooter |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7845448B2 (en) |
| EP (1) | EP1934084A1 (en) |
| JP (1) | JP2009507703A (en) |
| CA (1) | CA2622077A1 (en) |
| SE (1) | SE0501987L (en) |
| WO (1) | WO2007030055A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1908673B1 (en) * | 2006-10-06 | 2009-12-09 | Rolic Invest Sarl | Crawler vehicle |
| ITMI20071249A1 (en) * | 2007-06-21 | 2008-12-22 | Rolic Invest Sarl | RAMPONE FOR TRACKED VEHICLE TRACKS, IN PARTICULAR BAPTIST VEHICLES |
| ITMI20072091A1 (en) * | 2007-10-30 | 2009-04-30 | Rolic Invest Sarl | ROLLING MILL OF SNOW AND METHOD FOR THE PREPARATION OF THE SNOWY SKI SLOPE |
| ITMI20072096A1 (en) | 2007-10-30 | 2009-04-30 | Rolic Invest Sarl | CONNECTION DEVICE BETWEEN A BAPTIST VEHICLE AND AN EQUIPMENT FOR THE PREPARATION OF THE SNOWY SLOPE OF THE SKI SLOPES AND METHOD OF CONTROL USING THIS LINKING DEVICE |
| ITMI20072102A1 (en) * | 2007-10-31 | 2009-05-01 | Rolic Invest Sarl | ROTATING SNOW MILL FOR THE PREPARATION OF THE SNOWY SKI SLOPE |
| ITMI20072105A1 (en) * | 2007-10-31 | 2009-05-01 | Rolic Invest Sarl | ROTATING SNOW MILL FOR THE PREPARATION OF THE SNOWY SKI SLOPE |
| ITMI20081001A1 (en) * | 2008-05-29 | 2009-11-30 | Rolic Invest Sarl | TRACK FOR VEHICLES BAPTISTS AND VEHICLE BAPTISIST PROVIDED WITH THIS TRACK |
| IT1394923B1 (en) | 2009-02-18 | 2012-07-27 | Rolic Invest Sarl | VEHICLE BATTIPISTA INCLUDING A GROUP WINDOW ASSEMBLY TO MOVE THE VEHICLE LONG DRIVER PENDIUMS SLOPES AND WINDOW GROUP DRIVING METHOD |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB925032A (en) * | 1961-02-15 | 1963-05-01 | James Archibald Cuthbertson | Endless-track attachment for motor-propelled land vehicles |
| JPH0471981A (en) * | 1990-07-13 | 1992-03-06 | Suzuki Motor Corp | Snowmobile |
| FI921242A0 (en) * | 1992-03-23 | 1992-03-23 | Hannu Olavi Alava | TRANSMISSIONSANORDNING FOER SNOESKOTER. |
| JP3148483B2 (en) * | 1993-11-29 | 2001-03-19 | 本田技研工業株式会社 | Snow vehicle suspension |
| JPH09109942A (en) * | 1995-10-18 | 1997-04-28 | Toyota Autom Loom Works Ltd | Crawler rocking regulating device |
| US6095275A (en) * | 1995-12-19 | 2000-08-01 | Shaw; Charles T. | Conversion system for all terrain vehicles |
| US6006847A (en) * | 1997-02-18 | 1999-12-28 | Knight; Doyle D | Endless track structure for light wheeled vehicle |
| US6874586B2 (en) * | 2002-02-27 | 2005-04-05 | A & D Boivin Design Inc. | Track assembly for an all-terrain vehicle |
| CA2591755C (en) * | 2004-12-21 | 2009-05-26 | Bombardier Recreational Products Inc. | Endless belt drive for vehicle |
-
2005
- 2005-09-08 SE SE0501987A patent/SE0501987L/en not_active IP Right Cessation
-
2006
- 2006-08-31 EP EP06784130A patent/EP1934084A1/en not_active Withdrawn
- 2006-08-31 WO PCT/SE2006/000998 patent/WO2007030055A1/en active Application Filing
- 2006-08-31 US US12/066,174 patent/US7845448B2/en not_active Expired - Fee Related
- 2006-08-31 CA CA002622077A patent/CA2622077A1/en not_active Abandoned
- 2006-08-31 JP JP2008529951A patent/JP2009507703A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JP2009507703A (en) | 2009-02-26 |
| WO2007030055A1 (en) | 2007-03-15 |
| EP1934084A1 (en) | 2008-06-25 |
| US20080257616A1 (en) | 2008-10-23 |
| US7845448B2 (en) | 2010-12-07 |
| SE528322C2 (en) | 2006-10-17 |
| SE0501987L (en) | 2006-10-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |
Effective date: 20160307 |